Electrically-driven-phonograph driving mechanism



Sept. 28 1926. 1,601,460

I C. VASTIK ET AL ELECTRIGALLY DRIVEN PHONOGRAPH DRIVING MECHANISM Filed August 5. 1925 Fig.4 4 +2 4 Z/ -j/ 'INVEN OR. V .2 B'Y JTTORNEYS.

Patented Sept. 28, 1926.

UNITED STATES PATENT. OFFICE.

ELECTRICALLY-DRIVEN-PHONOGRAPI-I DRIVING- MECHANISM.

Application filed August a, 1925.

Our invention relates to an electrically driven phonographic driving mechanism, and record: turntable, which operates comparatively 'noiselessly, needs little lubrication and having means electrically applied to variably control and regulate the speed of the turn table rotations for a sound record, and to automatically stop said rotations and shut off the electric current when the needle has completed its course on the record, for the production of the tones intended. Withthese objects'in view our invention consists of certain novel features of construction and arrangement of parts as will be hereinafter more fully described and pointed out in the claims, reference being had to the accompanying drawings, in which Fig. 1 is aside view of our device.

Fig. 2 is a plan view of' our device with parts broken away.

Fig. 3 is a side view of a part of our device.

Fig. 4 is a diagrammatic view of the wiring plan of our device.

The same reference characters denotelike parts in each of the several figures of the drawings. 7

In carrying out our invention, we have the usual motor board A, to which the drivmechanism is attached as shown in Fig. 1. The motor'board is adapted to be removably mounted in a casing or housing E of a. phonograph, asshown in Fig. 1. Our improved driving and controlling mechanism is partly mounted on the under side of the board and partly located on the upper side of the board, and the record turn table 3 is on the upper side of board A. The driving mechanism consists of a suitable supporting frame B, which may be attached or mounted by means of screws or other means of connection on the underside of the board. The supporting frame B may be of any convenient'form for use; Mounted in the motor board A and supported in the frame B we have the usual turntable shaft 2, on which is mounted the record turntable 3; on the shaft 2 we have mounted, below the board, A, a disk 4: which mayor may not havea beveled surface 5; pivotally mounted with the frame B we have an electrte meter Serial No. 47,854.

C. We preferably employ an electric motor which is adaptable to either a direct or alternating current. We support the motor C as follows: Around the body we may have mounted a metal band 6 or other means of support, having the projecting lugs 7, 7 with which a lug 8 on frame B pivotally engages by means of the pivot 9;'0n shaft 10 of the motor C we have a friction gear 11, which engages the surface 5 of the disk 4 as shown in Fig. 1; to form a resilient contact between the gear 11 and the surface 5 of the disk, We have the coil spring 12, mounted in any convenient manner and having connection with the motor C and'the frame B; the device is operated in connection with the usual tone arm and needle. As a further partfo'f our device we have attached to the board A in any convenient manner a rheos'tat D and connected with it an operative button 15, which may be positioned for operative convenience either above board A or on the side of casing E; we elect to position the various parts of our invention, relatively to each other, as, in practical use and construction, may be hereafter dictated, without departing from the spirit and purpose of our invention.- The button 15'controls the movement of the contact arm of the rheostat, for the operation of the same. As a further part of our invention we have mounted on board A a combined automatic stop and current cut off F the stop and cutoff structure is'as follows; We have a metal frame support consisting of plate 15 of any convenient'for'm, and mounted horizontally and pivotally on plate 15 we have the lever stop arm '16, on which arm is mounted stop" projection 16 the arm also having pivotally mounted on the inner end thereof the link 18, having connection with pawl 19; also connecting with the stop arm 16 we have the coil spring 20; also pivotally mounted on F we have the brake and control handle 21, pivoted at 21 on which is mounted felt brake22; on the inner end of handle 21 we have ratchet tooth- 24, engaging pawl 19'. Mounted in any con-- venient manner on board A we have a switch box IE; and mounted'pi'votally on control handle 21 we have therod' aexextending slid as into switch. has. G; having anner end the head 27; mounted within box G we have the flat spring 27, having mounted thereon the button 29 and contact point 30; also mounted in box Gr we have the flat spring 31, having thereon the contact point 32, adapted to contact with point 30. Pivotally mounted on frame B, by pivot a we have a support I-I having the horizontal arm 33 and the vertical arm 34, and having on the curved end of arm 33 the bearing and in arm 34 the bearing 36; mounted in bearings 35 and 36 we have the shaft 37, on which is mounted a governor 38, gear 39 and disk 40; gear 39 having frictional contact with face 5 of disk 4; mounted between arm 33 and frame B we have the coil spring 39 as shown in Fig. 1; mounted on the lower end of arm 34 we have the curved spring support 41, carrying on its upper end and mounted thereon, the friction button 42 adapted to contact with disk 40, and its proper position to be determined by the regulating screw 43 mounted in arm 34. In our wiring plan shown in Fig. 4 we designate the source of electrical energy by I; from source I extends wire 44 to motor C, and from motor 0 We have wire 45 extending to rheostat D, and from rheostat D we have wire 46, extending to contact point 30, also from I we have wire 47 extending to point 32.

In the operation of our device having placed a record upon the turn table 3 in proper position we move handle 21 to the left causing spring support 29 to bring point 30 in contact with point 32 and by the same movement of handle 21, brake 22 is moved out of contact with turntable 3, and by the same movement of handle 21 by ac tion of spring 20, stop arm 16 is moved out of contact with tone arm of player, by the release of pawl 19 connecting with ratchet 24 and the revolution of the motor causes gear 11 to revolve and by frictional contact with disk 4 causes the disk and turntable to revolve, and with it the record, and the tone arm in position with its needle upon the record, the corresponding record tones are produced. The tone arm moved by the needle in the channel of the record finally reaches the end of the spacing, at which instant the tone arm contacts with pin 16 and moving lever 16 in a counter clockwise di rection, and with it link 18 which moves pawl 19 out of engagement with ratchet 24 and coil spring 27 distending moves lever 21 in a counter clockwise direction until brake 22 stops turntable, at the same time the rod 26 pressing against button 29 separates the contact points 22 and 30, thus breaking the circuit and stopping the motor; thus automatically the current is cut off and the motor stops for the replacement of a new record. Having put a new record on turntable 3, the handle 21 is again moved to the left and the mechanical operation is repeated as before.

Having thus described our invention what we claim as new and for which we desire Letters Patent is as follows:

1. In an electrically operated phonograph, controlling means for automatically controlling the movement of the driving mechanism comprising a baseboard, a shaft mounted therein, a turntable on said shaft on upper side of board, an electric motor on under side of base board, pivotally supported, having a friction wheel on shaft resiliently engaging a horizontally revolving disk mounted on shaft of turntable, a governor having resilient contact with disk, a rheostat mounted below the board, a switch and brake mechanism mounted on the surface of the base board, comprising a pivotally operating brake stop contacting with turn table, a lug contacting with tone arm, a handle lever operatively connecting between brake stop and electrical control switch, an electrical conduit extending from source of power to motor, to rheostat and control switch, and means whereby the tone arm automatically moves the brake against the turntable simultaneously closing the operating switch and congrolling the electrical power to the drive sha t.

2. In an electrically operated phonograph; a base board; a record turntable supported onthe upper side thereof; a drive shaft extending vertically through the base board; a friction disk mounted on the drive shaft below the base board; a motor pivotally mounted below the base board and having a friction wheel on its shaft which contacts with the friction disk; means mounted on the base board for controlling the electrical power to turntable, and simultaneously applying brake.

3. In an electrically operated phonograph, a removable base boarda record turntable on the upper side thereof mounted on a driving shaft extending upwardly through the base board; a friction disk mounted on the drive shaft; a governor having resilient contact with the disk, a rheostat mounted on the V baseboard and means for operating the same; a motor mounted in the mechanism; a friction wheel on its shaft having resilient contact with the disk; a switch and brake control mechanism, capable of operative contact with the tone arm; a connection between V the brake mechanism and the power controlling switch mechanism,

4. In an electrically operated phonograph driving mechanism, means for controlling the driving mechanism, comprising a housing support having mounted thereon a turntable, an electric motor; a disk mounted on the turntable shaft; a friction wheel on a motor shaft engaging the disk; a governor adjustab-ly controlled in contact with disk; a

combined switch and brake mechanism; a from the source of power to the motor, to rheostat; means thru Which the tone arm of the thermostat andto the switch mechanism. the phonograph actuates the combined brake In testimony whereof We have affixed our 10 and switch mechanism; and causes the brake signatures.

to contact With the turntable and simultaneously closes the switch breaking the elec- CHARLES VASTIK.

trical circuit; an electrical conduit extending MICHAEL BROZOVICH. 

